Pages: [1]   Go Down
Author Topic: muxing/demuxing using 4067  (Read 149 times)
0 Members and 1 Guest are viewing this topic.
0
Offline Offline
Newbie
*
Karma: 0
Posts: 36
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

dear list,

i have just finished making a touch sensitive keyboard, where each of the touch nodes output 5v logic as you touch them.

i need these signals to be sent to another module through a cable, to turn things on/off - so rather than using a bulky 30 wire cable to get the control signals where i need them, i thought the 4067 multiplex breakout from sparkfun might come handy :: https://www.sparkfun.com/products/9056

i understand this mux chip can also serve as a demultiplexer, however i dont quite understand how to pack the button states into a single datastream on the keyboard side, and how to unpack them on the other.

would i be able to use another 4067 chip in reverse? or do i need an arduino to scan through the inputs at high speeds?

here is a diagram of what i need to do:



any thoughts would be greatly appreciated!!

all the best,
-úlfur
Logged

-------http://ulfurhansson.com/

Pages: [1]   Go Up
Jump to: